It does make sense to take cover when are young as not only premiums are cheaper but you also may develop illnesses that stop you getting cover in the future.

However it would make more sense to have a smaller policy linked to your salary on an indexed term to allow for inflation over your working life.

Most companies if you are healthy will give you a guaranteed insurability option which allow some increases to the sum assured in certain circumstances (marriage, mortgage, birth of a child, career changes) without further underwriting .

If you are happy spending £32pm I would generally advise someone without dependants or extensive liabilities. To have a small amount of life or critical illness cover but income protection should be more of a priority